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Loans - Loan Portfolio Aging Analysis (Details) - USD ($)	Dec. 31, 2021	Dec. 31, 2020
Financing Receivable, Past Due [Line Items]
Total Loans Receivable	$ 5,231,331,000	$ 5,724,773,000
Accruing Loans 90 or More Days Past Due	0	0
Loans at fair value	0	17,011,000
Total Past Due
Financing Receivable, Past Due [Line Items]
Total Loans Receivable	25,615,000	25,763,000
30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Loans Receivable	2,434,000	6,031,000
60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Loans Receivable	1,653,000	1,241,000
Loans Past Due 90 Days or More
Financing Receivable, Past Due [Line Items]
Total Loans Receivable	21,528,000	18,491,000
Current Loans
Financing Receivable, Past Due [Line Items]
Total Loans Receivable	5,205,716,000	5,699,010,000
Real estate
Financing Receivable, Past Due [Line Items]
Total Loans Receivable	3,133,334,000	2,804,919,000
Accruing Loans 90 or More Days Past Due	0	0
Real estate | Total Past Due
Financing Receivable, Past Due [Line Items]
Total Loans Receivable	13,328,000	11,214,000
Real estate | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Loans Receivable	2,267,000	5,215,000
Real estate | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Loans Receivable	481,000	135,000
Real estate | Loans Past Due 90 Days or More
Financing Receivable, Past Due [Line Items]
Total Loans Receivable	10,580,000	5,864,000
Real estate | Current Loans
Financing Receivable, Past Due [Line Items]
Total Loans Receivable	3,120,006,000	2,793,705,000
Real estate | Commercial real estate
Financing Receivable, Past Due [Line Items]
Total Loans Receivable	1,693,512,000	1,387,939,000
Accruing Loans 90 or More Days Past Due	0	0
Loans at fair value	0	17,000,000
Real estate | Commercial real estate | Total Past Due
Financing Receivable, Past Due [Line Items]
Total Loans Receivable	219,000	4,244,000
Real estate | Commercial real estate | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Loans Receivable	22,000	1,072,000
Real estate | Commercial real estate | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Loans Receivable	0	0
Real estate | Commercial real estate | Loans Past Due 90 Days or More
Financing Receivable, Past Due [Line Items]
Total Loans Receivable	197,000	3,172,000
Real estate | Commercial real estate | Current Loans
Financing Receivable, Past Due [Line Items]
Total Loans Receivable	1,693,293,000	1,383,695,000
Real estate | Construction/land/land development
Financing Receivable, Past Due [Line Items]
Total Loans Receivable	530,083,000	531,860,000
Accruing Loans 90 or More Days Past Due	0	0
Real estate | Construction/land/land development | Total Past Due
Financing Receivable, Past Due [Line Items]
Total Loans Receivable	181,000	2,698,000
Real estate | Construction/land/land development | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Loans Receivable	0	369,000
Real estate | Construction/land/land development | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Loans Receivable	129,000	1,000
Real estate | Construction/land/land development | Loans Past Due 90 Days or More
Financing Receivable, Past Due [Line Items]
Total Loans Receivable	52,000	2,328,000
Real estate | Construction/land/land development | Current Loans
Financing Receivable, Past Due [Line Items]
Total Loans Receivable	529,902,000	529,162,000
Real estate | Residential real estate
Financing Receivable, Past Due [Line Items]
Total Loans Receivable	909,739,000	885,120,000
Accruing Loans 90 or More Days Past Due	0	0
Real estate | Residential real estate | Total Past Due
Financing Receivable, Past Due [Line Items]
Total Loans Receivable	12,928,000	4,272,000
Real estate | Residential real estate | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Loans Receivable	2,245,000	3,774,000
Real estate | Residential real estate | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Loans Receivable	352,000	134,000
Real estate | Residential real estate | Loans Past Due 90 Days or More
Financing Receivable, Past Due [Line Items]
Total Loans Receivable	10,331,000	364,000
Real estate | Residential real estate | Current Loans
Financing Receivable, Past Due [Line Items]
Total Loans Receivable	896,811,000	880,848,000
Commercial and industrial
Financing Receivable, Past Due [Line Items]
Total Loans Receivable	1,454,235,000	1,817,862,000
Accruing Loans 90 or More Days Past Due	0	0
Commercial and industrial | Total Past Due
Financing Receivable, Past Due [Line Items]
Total Loans Receivable	12,176,000	14,425,000
Commercial and industrial | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Loans Receivable	77,000	703,000
Commercial and industrial | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Loans Receivable	1,172,000	1,097,000
Commercial and industrial | Loans Past Due 90 Days or More
Financing Receivable, Past Due [Line Items]
Total Loans Receivable	10,927,000	12,625,000
Commercial and industrial | Current Loans
Financing Receivable, Past Due [Line Items]
Total Loans Receivable	1,442,059,000	1,803,437,000
Mortgage warehouse lines of credit
Financing Receivable, Past Due [Line Items]
Total Loans Receivable	627,078,000	1,084,001,000
Accruing Loans 90 or More Days Past Due	0	0
Mortgage warehouse lines of credit | Total Past Due
Financing Receivable, Past Due [Line Items]
Total Loans Receivable	0	0
Mortgage warehouse lines of credit | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Loans Receivable	0	0
Mortgage warehouse lines of credit | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Loans Receivable	0	0
Mortgage warehouse lines of credit | Loans Past Due 90 Days or More
Financing Receivable, Past Due [Line Items]
Total Loans Receivable	0	0
Mortgage warehouse lines of credit | Current Loans
Financing Receivable, Past Due [Line Items]
Total Loans Receivable	627,078,000	1,084,001,000
Consumer
Financing Receivable, Past Due [Line Items]
Total Loans Receivable	16,684,000	17,991,000
Accruing Loans 90 or More Days Past Due	0	0
Consumer | Total Past Due
Financing Receivable, Past Due [Line Items]
Total Loans Receivable	111,000	124,000
Consumer | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Loans Receivable	90,000	113,000
Consumer | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Loans Receivable	0	9,000
Consumer | Loans Past Due 90 Days or More
Financing Receivable, Past Due [Line Items]
Total Loans Receivable	21,000	2,000
Consumer | Current Loans
Financing Receivable, Past Due [Line Items]
Total Loans Receivable	$ 16,573,000	$ 17,867,000

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Amount excluding accrued interest, before allowance for credit loss, of financing receivable.

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